MCQOPTIONS
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| 1. |
Graphite is a soft solid lubricant extremely difficult to melt. The reason for this anomalous behaviour is that graphite? |
| A. | has molecules of variable molecular masses like polymers. |
| B. | is a non-crystalline substance. |
| C. | has carbon atoms arranged in large plates of rings of strongly bound carbon atoms with weak interplate bonds. |
| D. | is an allotropic form of carbon. |
| Answer» D. is an allotropic form of carbon. | |